Energy Secretary Chris Wright clarified that the United States will not conduct nuclear detonations, saying tests will focus on nonnuclear components and systems instead. That distinction matters because President Trump had signaled a restart of “nuclear testing” amid concerns about rivals, and officials are balancing deterrence with longstanding norms. Washington continues a massive modernization program for its arsenal while insisting experiments will avoid full-yield explosions. The debate now turns to how to maintain a credible deterrent without reversing the global taboo against detonations.
Wright was explicit that testing will target “the other parts of a nuclear weapon,” and he spoke about this on Fox News’ “The Sunday Briefing.” He added, “I think the tests we’re talking about right now are systems tests,” he explained. “These are not nuclear explosions. These are what we call noncritical explosions.” That language is meant to draw a clear line between detonations and system-level validation.
President Trump had said he wanted to revive “nuclear testing” because other countries are believed to be active, remarking on the way to a summit with Chinese leader Xi Jinping. He did not spell out whether he meant full-scale explosive tests or trials of delivery systems and related gear. The ambiguity prompted quick clarification from Energy Department leadership.
No U.S. nuclear explosive test has taken place since 1992, and only one detonation by another nation in the past quarter century is publicly confirmed, North Korea’s 2017 event. That history keeps the stakes high whenever talk of testing returns. Americans expect their leaders to protect the homeland while avoiding needless escalation.
The president said he instructed the Pentagon to resume testing of nuclear-capable delivery systems, noting the Pentagon oversees those activities. The Energy Department would oversee experiments involving explosive components and materials. That split in responsibilities matters for oversight and the kind of tests officials choose to pursue.
“We’ve halted it years — many years — ago,” Trump said, stressing the long pause. When pushed for clarification about detonations, he added, “I’m saying that we’re going to test nuclear weapons like other countries do.” Those comments underline his concern that rivals might be improving capabilities out of sight.
Trump told CBS’ 60 Minutes he believes adversaries are conducting secret programs, saying, “Russia’s testing nuclear weapons, and China’s testing them, too,” he said. “You just don’t know about it.” From a Republican perspective, that uncertainty strengthens the case for robust verification and a posture that deters ambition.
China is rapidly expanding its silo-based forces and is projected to field many more warheads by the end of the decade, according to Pentagon assessments. Beijing has not detonated a nuclear device since 1996, however, and Moscow’s last confirmed explosion dates back to 1990. Still, recent Russian claims about testing delivery vehicles like Poseidon and a nuclear-powered cruise missile raise red flags about capability development.
The 1996 Comprehensive Test Ban Treaty helped establish a global norm against detonations, even though the Senate did not ratify it. Many states never ratified the pact, but it nevertheless shaped international expectations. Republican policymakers often stress that norms matter but must not leave the U.S. strategically hamstrung.
The United States routinely conducts tests of unarmed nuclear-capable delivery systems and performs subcritical experiments with fissile materials at the Nevada National Security Site. Those subcritical tests do not produce a chain reaction and are intended to validate models of aging warheads. Officials say these experiments have been a staple of stockpile stewardship for decades.
The U.S. has conducted more than two dozen subcritical tests since the late 1990s as part of routine maintenance of confidence in the arsenal. “And again, these will be nonnuclear explosions,” Mr. Wright said, emphasizing the nondetonative nature of planned experiments. “These are just developing sophisticated systems so that our replacement nuclear weapons are even better than the ones they were before.”
Washington is in the midst of a roughly three-decade, $1.7 trillion effort to replace aging warheads with modernized versions, a program Republicans argue is essential for credible deterrence. Investing in reliable, safe systems reassures allies and warns rivals that aggression carries real consequences. Oversight and clear communication will be key as officials move forward with tests that stop short of nuclear detonations.
